using System;
class Teste
{
	static double Soma(params double[] dd)
	{
		double soma = 0.0;
		for (int i = 0; i< dd.Length; i++) soma += dd[i];
		return soma;
	}
	static void Treta(int x, int y = 88)
	{
		Console.WriteLine(x+y);
	}
	static void Main()
	{
		Console.WriteLine(Soma(new double[] {1.9,2.3,4.5}));
		Treta(100); Treta(y:10,x:3);
	}
}

